OAA computing section circular NK 484 Periodic Comet Reinmuth 2 1960 IX = 1967 XI = 1974 VI
= 1981 III The following improved orbital elements, by S. Nakano, are from 65 observations 1960 to 1981: Perturbations by all nine planets were taken into account. The mean residual is +/- 1.22 arc seconds. Epoch = 1981 Feb. 5.0 ET T = 1981 Jan. 29.94751 +/- 0.00089 (m.e.) ET Peri. = 45.40929 +/- 0.00058 Node = 296.04743 +/- 0.00057 (1950.0) Inc. = 6.96933 +/- 0.00007 q = 1.9458588 +/- 0.0000019 AU e = 0.4549090 +/- 0.0000005 a = 3.5697868 +/- 0.0000003 AU nß = 0.14613043 +/- 0.0000000003 P = 6.745 +/- 0.0000007 years T = 1960 Nov. 24.81400 ET Epoch = 1960 Dec. 12.0 ET Peri. = 45.48865 e = 0.4568416 Node = 296.17425 (1950.0) a = 3.5578858 AU Inc. = 6.99105 nß= 0.14686424 q = 1.9324955 AU P = 6.711 years T = 1967 Aug. 18.24106 ET Epoch = 1967 Aug. 18.0 ET Peri. = 45.63970 e = 0.4554479 Node = 296.09314 (1950.0) a = 3.5663435 AU Inc. = 6.97994 nß= 0.14634211 q = 1.9420598 AU P = 6.735 years T = 1974 May 8.14883 ET Epoch = 1974 Apr. 23.0 ET Peri. = 45.42891 e = 0.4557750 Node = 296.09676 (1950.0) a = 3.5666368 AU Inc. = 6.97903 nß= 0.14632406 q = 1.9410528 AU P = 6.736 years The predicted orbit for the 1987 return is as follows: T = 1987 Oct. 25.69760 ET Epoch = 1987 Oct. 12.0 ET Peri. = 45.46311 e = 0.4564881 Node = 296.01030 (1950.0) a = 3.5620546 AU Inc. = 6.97576 nß= 0.14660649 q = 1.9360192 AU P = 6.723 years There are the residuals, in seconds of arc, from the above orbital elements on the next pages: - continued - NK 484 - 2 Date/ UT R.A. (1950) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1960 05 22.35453 19 29 52.28 -26 10 15.3 0.1+ 0.8- 689/FS 1960 05 22.39954 19 29 52.82 -26 10 10.8 0.3+ 0.3- 689/FS 1960 05 31.35215 19 30 43.98 -25 56 19.0 0.3+ 0.8- 689/FS 1960 05 31.41517 19 30 43.73 -25 56 12.9 0.5+ 0.2- 689/FS 1960 06 17.30631 19 25 59.69 -25 29 50.9 0.0 0.0 689/FS 1960 06 17.34093 19 25 58.57 -25 29 47.6 0.5+ 0.0 689/FS 1960 07 15.24060 19 04 22.94 -24 24 43.2 1.1+ 0.6- 689/FS 1960 07 15.26623 19 04 21.45 -24 24 38.5 0.3+ 0.7- 689/FS 1960 08 17.14602 18 45 27.86 -22 15 41.0 1.3+ 1.4- 689/FS 1960 08 17.15780 18 45 27.76 -22 15 37.8 1.3+ 1.2- 689/FS 1960 09 26.16786 19 09 31.55 -19 21 36.3 0.2- 0.2+ 689/FS 1960 09 26.17617 19 09 32.21 -19 21 34.1 0.7+ 0.1+ 689/FS 1960 10 14.09530 19 35 13.71 -17 48 36.0 0.1- 0.6+ 689/FS 1960 11 10.09488 20 24 34.85 -14 40 56.2 1.4- 1.2+ 689/FS 1960 11 10.14059 20 24 40.26 -14 40 33.5 1.3- 1.1+ 689/FS 1960 12 20.10135 21 49 18.22 -07 51 10.0 2.3- 0.3- 689/FS 1961 01 13.11112 22 42 04.51 -02 42 33.6 1.8+ 1.5+ 689/FS 1967 06 05.71736 22 43 39.17 -05 50 40.5 ( 8.4- 16.1-) 387/tm 1967 06 07.37366 22 46 04.11 -05 28 20.4 0.5- 0.4- 693/CT 1967 06 07.39866 22 46 06.26 -05 28 00.3 0.3- 0.3- 693/CT 1967 09 05.95313 23 32 30.58 +09 27 21.8 ( 1.4- 3.8-) 020/NI 1967 09 05.96697 23 32 29.98 +09 27 28.2 2.7- 1.0+ 020/NI 1967 09 06.23288 23 32 21.27 +09 27 57.7 0.0 0.1+ 693/CT 1967 09 07.98355 23 31 19.98 +09 30 40.5 0.8- 1.1- 020/NI 1967 09 07.99464 23 31 19.68 +09 30 43.0 1.0+ 0.5+ 020/NI 1967 09 08.24444 23 31 11.13 +09 31 05.3 1.7+ 1.5+ 693/CT 1967 09 12.99720 23 28 18.28 +09 34 34.6 1.2+ 0.5- 020/NI 1967 09 14.00350 23 27 33.26 +09 35 03.5 ( 0.03- 0.01+) 989/WF 1967 09 14.06280 23 27 32.35 +09 35 05.5 (95.7- 25.4+) 989/WF 1967 09 30.15484 23 18 38.59 +09 11 55.0 0.7+ 0.6- 693/CT 1967 09 30.16386 23 18 38.33 +09 11 53.7 0.8+ 0.6- 693/CT 1967 09 30.87441 23 18 19.41 +09 10 05.8 ( 6.1+ 0.1+) 095/CR 1967 10 04.90181 23 16 43.70 +08 59 15.4 ( 3.0- 4.7-) 095/CR 1967 10 05.94887 23 16 22.81 +08 56 25.6 2.7- 0.8+ 020/NI 1967 10 06.84307 23 16 06.30 +08 53 46.8 ( 2.6- 6.5-) 095/CR 1967 10 07.00208 23 16 03.12 +08 53 26.3 ( 4.1- 0.8+) 056/SP 1967 10 07.02118 23 16 02.80 +08 53 22.3 3.4- 0.2+ 056/SP 1967 10 11.0312 23 15 05.36 +08 41 57.3 0.1- 0.5- 026/BE 1967 10 11.9851 23 14 55.60 +08 39 16.9 0.6- 0.6+ 026/BE 1967 11 04.13122 23 19 07.63 +07 53 14.5 0.4+ 0.4- 693/CT 1967 11 04.15622 23 19 08.36 +07 53 13.3 0.6+ 0.5- 693/CT 1973 05 25.23166 15 19 59.78 -27 23 03.4 0.1- 1.7+ 691/ST 1973 05 25.27662 15 19 57.34 -27 22 53.0 0.3+ 0.7+ 691/ST 1973 05 31.10429 15 14 53.36 -26 56 52.6 1.2- 0.5+ 821/AL 1973 05 31.13416 15 14 51.74 -26 56 43.1 2.0- 1.7+ 821/AL 1974 08 20.29139 03 14 30.43 +26 31 05.1 1.3- 1.1+ 801/HO 1974 08 21.33613 03 15 45.63 +26 38 49.6 0.1- 0.7+ 801/HO 1974 09 11.46059 03 35 05.45 +28 49 11.2 2.7+ 1.0+ 691/ST 1974 09 11.48316 03 35 06.20 +28 49 17.6 2.3+ 0.7+ 691/ST 1974 10 13.68264 03 36 59.86 +30 15 24.8 2.9- 3.0- 372/sk - continued - NK 484 - 3 Date/ UT R.A. (1950) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1974 10 15.62083 03 35 59.38 +30 15 08.1 0.1+ 1.3+ 396/tc 1974 10 21.36111 03 32 21.44 +30 09 49.9 1.7+ 0.8+ 691/ST 1974 10 21.37564 03 32 20.84 +30 09 48.7 2.4+ 0.9+ 691/ST 1974 10 23.69097 03 30 38.62 +30 05 45.4 2.6+ 1.1- 372/sk 1974 11 11.63479 03 13 44.43 +28 54 42.8 1.0- 2.1- 372/sk 1974 11 14.69375 03 10 52.91 +28 37 52.5 2.2- 0.4- 372/sk 1974 11 16.23333 03 09 28.87 +28 28 59.0 1.3+ 0.6- 693/CT 1974 11 16.25694 03 09 27.54 +28 28 51.2 1.5+ 0.2- 693/CT 1974 11 16.30017 03 09 24.75 +28 28 34.3 0.3- 0.3- 801/HO 1974 11 17.10325 03 08 41.54 +28 23 49.9 0.9- 0.8- 801/HO 1974 11 18.13084 03 07 46.41 +28 17 40.9 0.9- 1.1- 801/HO 1974 11 19.07542 03 06 56.52 +28 11 56.7 2.0- 1.3- 801/HO 1974 11 23.16478 03 03 29.64 +27 46 28.3 0.5- 0.8- 801/HO 1974 12 16.02889 02 51 07.62 +25 25 45.1 0.4- 2.4+ 801/HO 1974 12 17.20417 02 50 52.38 +25 19 27.9 2.6+ 1.3+ 693/CT 1974 12 17.24792 02 50 51.75 +25 19 13.8 2.3+ 1.1+ 693/CT 1975 01 07.08819 02 52 40.35 +23 55 57.8 0.8- 0.0 691/ST 1975 01 07.16528 02 52 41.86 +23 55 45.4 0.9- 0.2- 691/ST 1975 02 05.16944 03 11 44.58 +23 26 59.0 0.8- 0.2- 691/ST 1975 02 05.21788 03 11 47.17 +23 27 00.1 0.9- 0.0 691/ST 1980 09 10.49722 17 12 11.54 -24 25 52.0 2.5+ 0.3+ 323/PR 1980 09 11.50524 17 13 25.84 -24 24 04.6 ( 5.8+ 0.5+) 323/PR 1981 11 25.25738 05 33 30.55 +29 44 53.1 0.1+ 0.3+ 801/HO 1981 12 30.22836 05 00 12.91 +28 09 35.4 0.4- 0.2- 801/HO ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1985 December 16